When the end of the world came, in the hopeless darkness, Gu Qingshan broke away from time and space, and returned to the world before it collapsed, determined to change his fate. But as time went on, he gradually realized that the apocalypse is not as simple as it seemed…

From MangaHelpers:
From the perspective of an alien planet with super-advanced technology and tiny (1/60th the size of a human) inhabitants, planet Earth was the perfect location to banish their worst criminals. Five of said criminals were sent to the planet to be exiled, attached to little critters like frogs and rabbits so they can never be fully active. Due to an accident, these five criminals managed to escape and attach themselves to five different girls that were nearby. The one responsible for the banishment of these five criminals now must detach them from the girls by mouth-to-mouth release.

Souya is a sullen salaryman whose days are spent chasing after work deadlines all while still keeping his dream of becoming a manga artist. To him, his one and only support in life is none other than his beloved wife, Yuuka. One day, on his way back home, he was suddenly caught in an accident and before he knew it, an alien had taken hold of his body! Not only that, the evil threat of another alien is closing in on Yuuka too!

Here comes Souya as "Otto-man", his superpowered husband form, as he jumps in to save his dearest wife! Have a taste of his love for wife and this world!

The blacksmith NPC ‘Aidan.’ One day, his village gets deleted by the hands of the system moderator and as he and his little sister ‘Elise’ perished, he swore to himself. I’ll destroy this system with my very hands. It was then…! “You have unlocked moderator perms, Moderator Lv. 1” Aidan wakes up with a new power, Marking the beginning of his journey as a moderator…! What will become of Aidan?!

Hoshino Star, a male high school student who lives leisurely in the countryside, has a unique power—that is, being able to get along with any animal! Although Hoshi spends his days feeling supreme joy in interacting with animals, on the other hand, he also has a great dislike of humans. Kirari Yozora, a childhood friend who struggles with her extreme personality, suddenly thinks one day. ──What would Hoshi think if there were animals like humans?At that time, a mysterious object comes flying with a roaring sound. Appearing from the other side of the dust cloud is the most terrifying and worst visitor with cute fur ears and a tail. A genius tamer VS greedy kemomimi unfolds in this relaxing erotic comedy!

A full color comic about the daily life of a office lady, Yuu-chan who works in small enterprise business , and a stay-at-home writer, Miyu-san!!

Years after the end of the world, two girls tour the ruins of Japan.

The main character is Pan Gamma Vi Gen. He is the captain of the legendary black vessel. Pan Gamma Vi Gen is lazy and clumsy -- that is him when is resting. But once Pan decides to work, he is the best man available. Pan says things that normal people can hardly understand. And he doesn't say much, he only gives lots of clues.
Everything starts when Captain Pan let Mia and Tuban Sanoo be aboard. Mia is a princess of a fallen country and Tuban is the best, people say, swordsman as well as strategist. Although Pan Gamma Vi Gen is the main character, it seems Pan, Mia and Tuban are the main characters as Mia and Tuban appear in all episodes. Mia is looking for science to restore her county, Ontana. Tuban is protecting Mia as the will of someone Tuban trusted. Pan Gamma Vi Gen agreed to take Mia to where she could locate the science in exchange of her virginity. (Don't get Pan wrong here, I believe he meant something else but at this moment, Mia's virginity is all I can guess.)

From Tokyopop:

In real life, Roto, Boromid and Ah-Dol are average kids with average problems, but in the virtual world of Lost Saga, they're heroes. They might even become legends... if they can stop bickering long enough to level up. Whether it's werewolves running rampant or a gorgeous pair of troublesome thieves, our boys must be ready for anything, because in Lost Saga nothing is what it seems and murder can happen with a click of a mouse.

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The series centers on the main character Jang-Gun and his friends along with their virtual reality avatars in the computer game world called "Lost Saga". When Jang-Gun logs on as a different character, he "Creates" an AI with a personality from the hacked disk he found when renewing his appearance for his once a year renewal process. Yureka is a flutter-brained, but advanced, AI with powerful stats and a real-life doppelganger. It is his turn to see just how deep his immersion in the virtual world goes.

Having given up on both study and dreams, Meguri Sakamoto ended his lacklustre high school life.
But, on the day of the graduation ceremony, the dissappearance of his ex-girlfriend and now famous musician Chika Nito, has been reported in the news?!
Starting with a time leap, this is a love story about redoing one's youth.

A status window appeared in front of Ryu Young-jun, a researcher at a pharmaceutical company.
Rosalin's status window, an artificial cell that knows everything about biology.

Six years after the JS Incident, a young dimensional traveler Touma Avenir rescues a mysterious mute girl named Lily Strosek from a secret research facility on a distant world of Ruwella. However, by doing so, he becomes an unwitting accomplice in the Book of the Silver Cross Incident, the latest interdimensional crisis faced by the former Riot Force 6 members...

Searching with you, the theory of love and everything else.

Aoi is an office worker who isn't good at interacting with people, but one day, he meets a mysterious person called Q chasing butterflies in the park at night.
As if drawn by something, Aoi chases after Q but is suddenly enveloped in a mysterious light and before he realises it, he finds himself on board a spaceship!
Q was an alien who had come to collect living creatures!
Through the various species they collect, the 2 who know nothing about love will embark on an adventure to find out just what love is!

(from Amazon Japan):

All six variations of Doraemon's first meeting with Nobita in one collection!

In commemoration of Doraemon's 50th anniversary, all 6 original versions of the first "Doraemon" chapter are compiled in their entirety. Also included is the legendary preview, where the title and main characters weren't decided until just minutes before the manga's deadline, and a secret "The Birth of Doraemon" chapter written by the creator himself! The entire collection is in the brand-new Shinsho book format, and the commentary at the end is full of rare photos as well as materials!

An unknowing Sudou Kaname is invited to try out a new mysterious mobile app game called "Darwin's Game", but later realizes that he's in for more than he's bargained for when he finds out that there's no way to "quit" the game.

Q likes eating monsters and donuts, a lot.

Free Life Fantasy Online… a.k.a. FLFO.
Tsukishiro Kotone receives this game as gift from her little sister and starts playing.
The character’s race she has selected was… one of “Inhuman” races for enthusiasts.
A race said to be bad even among Inhuman races that are known to be difficult – a Zombie.

Big Tiddies Onee-san playing Dark Soul VRMMO as Undead Princess.

U.C. 0097, one year after the opening of "Laplace's Box".

Despite the revelation of the Universal Century Charter that acknowledges the existence and rights of Newtypes, the framework of the world has not been greatly altered.

The conflict later dubbed the "Laplace Incident" is thought to have ended with the downfall of the Neo Zeon remnants known as the Sleeves. In its final battle, two full psycho-frame mobile suits displayed power beyond human understanding. The white unicorn and the black lion were sealed away to remove this danger from people's consciousness, and they should now be completely forgotten.

However, the RX-0 Unicorn Gundam 03, which disappeared two years earlier, is now about to show itself in the Earth Sphere once more. A golden phoenix… named Phenex.

The future brought many changes, people can live longer now! Yet, there's something that won't change:
"Everyone dies at some point."

Shihyun Lee finds himself with only one to two months to live, but there's hope... for the right price. He has to kill someone, and not just anyone, he has to kill his doppelgänger.

Everyone in the world uses smartphone apps. But inside them lurks unknown creatures called "Appli Monsters," or "Appmon." The Appmon are AI lifeforms with the ability to think and act, and exist in the boundary between the human world and digital space to allow people and the system to interface and function. But in the vast sea of the internet, the "last boss AI" Leviathan takes control of the Appmon with a virus and begins hacking every system, thus starting to control the human world from the world of the net.The protagonist, Haru Shinkai, is led to acquire the Appli Drive, and uses it to materialize Gacchimon, a search app monster. What is the secret hidden within the Appli Drive? What is the mysterious field that exists between net world where the Appmon exist, and the real world? What is the "App Combine" that can combine two Appmons? What is Leviathan's true goal?